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Step-growth or condensation polymerization is a stepwise reaction of bi or multifunctional monomers to form long-chain polymers. As all the monomers are reactive, most of the monomers are consumed at the early stages of the reaction to form small chains of reactive oligomers, which then combine to form long polymer chains in the late stages. Hence, the reaction has to proceed for a long time to achieve high molecular weight polymers.
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The skeletal structure of polymers synthesized via radical polymerization is always branched. For example, the polymerization of ethylene by radical polymerization results in a low-density grade of polyethylene with a heavily branched skeletal structure. Here, the radical site abstracts hydrogen from the growing chain, and the radical site shifts from the end (a primary carbon center) to anywhere within the growing chain (a secondary carbon center). Consequently, the part of the chain from the...
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Radical Chain-Growth Polymerization: Overview01:10

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Chain-growth or addition polymerization is successive addition reactions of monomers with a polymer chain. In radical chain-growth polymerization, the reaction proceeds via a free-radical intermediate. The free radical is formed from radical initiators, which spontaneously generate free radicals by homolytic fission. Organic peroxides (such as dibenzoyl peroxide, as shown in Figure 1) or azo compounds are popular radical initiators. A low concentration ratio of radical initiator to monomer is...
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Ziegler–Natta polymerization is another form of addition or chain‐growth polymerization used for synthesizing linear polymers over branched polymers. The catalyst used for polymerization is the Ziegler–Natta catalyst, named after Karl Ziegler and Giulio Natta, who developed it in 1953. This catalyst is an organometallic complex of titanium tetrachloride and triethyl aluminum, with the active form of the catalyst being an alkyl titanium compound. Using the Ziegler–Natta...
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Step growth polymerization involves bi or multifunctional monomers. Bifunctional monomers react to form linear step growth polymers, whereas multifunctional monomers react to form non-linear or branched polymers.
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Radical Chain-Growth Polymerization: Mechanism01:09

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The radical chain-growth polymerization mechanism consists of three steps: initiation, propagation, and termination of polymerization. The polymerization initiates when a free radical generated from the radical initiator adds to the unsaturated bond in the monomer. The unpaired electron of the free radical and one π electron in the unsaturated bond creates a σ bond between the free radical and the monomer. As a result, the other π electron in the unsaturated bond converts this...
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Correction: Accelerating copolymer inverse design using monte carlo tree search.

Tarak K Patra1, Troy D Loeffler2,3, Subramanian K R S Sankaranarayanan2,3

  • 1Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai, Tamil Nadu 600036, India. tpatra@iitm.ac.in.

Nanoscale
|September 25, 2023
PubMed
Summary
This summary is machine-generated.

This correction clarifies the original study on accelerating copolymer inverse design. The research utilizes Monte Carlo Tree Search (MCTS) for efficient material discovery.

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Area of Science:

  • Materials Science
  • Computational Chemistry
  • Polymer Science

Context:

  • The original study focused on accelerating the inverse design of copolymers.
  • Inverse design aims to discover materials with desired properties.
  • Computational methods are crucial for exploring vast chemical spaces.

Purpose:

  • To provide a correction to the previously published article.
  • To ensure the accuracy of the findings related to copolymer inverse design.
  • To maintain the integrity of scientific records.

Summary:

  • This entry is a correction notice for a 2020 Nanoscale paper.
  • It addresses errors or provides clarifications for the study titled 'Accelerating copolymer inverse design using Monte Carlo Tree Search'.
  • The correction ensures the reliability of the research methods and results presented.

Impact:

  • Ensures accurate understanding of copolymer inverse design techniques.
  • Upholds scientific rigor in computational materials discovery.
  • Provides a corrected reference for researchers in polymer science and materials informatics.